4/7 & 4/8 - 8 th grade agenda learning objective: learn about rockets collect hw: reading &...
TRANSCRIPT
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4/7 & 4/8 - 8th Grade Agenda
Learning Objective: Learn about RocketsCollect HW: Reading & Notetaking p.216 - 218Textbook Reading: p.489 - 491Chap 11 & 12 Study GuideHW: Reading & Notetaking p.219– 220Reminder Chap 11 & 12 Test on 4/14
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Daily Reflection
• Prompt: Write 3 facts that you know about the moon
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What causes Solar Eclipses
• The moon casts a shadow on the Earth
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Solar Eclipse
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Why don’t we see Solar eclipses every month?
• Because the moon’s orbit is tilted with respect to Earth’s orbit.
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How are Lunar Eclipses created?
• The Moon passes through the Earth’s shadow.
• Lunar Eclipses are much more common than Solar Eclipses
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Lunar Eclipses
• Why do lunar eclipses occur only at full moon?
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What causes tides• Tides occur
mainly because of differences in how much the moon pulls on different parts of Earth
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What are the Characteristics of the Moon?
• No Air• Diameter 3476 km (1/4 of
the Earth’s Diameter)• Less Dense than the
Earth• Temperature 140C to -
180C• Ice near the Moon’s poles
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How did the Moon get created?• 4.5 Billion years ago, a small planet collided
with the Earth to form the Moon.
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How do Rockets Work?
• A rocket moves forward when gases expelled from the rear of the rocket pushes it in the opposite direction
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Multistage Rockets
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History of Rockets
• In 1942, V2 Rocket became the first man made object launched into space.
• It was developed by German scientist Wernher Von Bran during World War 2
• Von Bran help develop the US Space program
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History of Manned Space Flight
• Russian put the first satellite Sputnik 1 in 1957
• Russian put the first dog (Liaka) into space in 1957
• Russian put the first man (Yuri Gagarin) in space in 1961
• The first American (John Glenn) was put into orbit in 1962
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History of Manned Space Flight
• Americans (Apollo 11) landed on the moon in 1969
• First Shuttle flight was in 1981
• After 2 Shuttles were lost, the Space Shuttles were retired in 2011
• International Space Station has been in operation since 1998